{"id":4553,"date":"2015-11-19T06:55:25","date_gmt":"2015-11-18T23:55:25","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4553"},"modified":"2017-10-02T08:24:20","modified_gmt":"2017-10-02T01:24:20","slug":"sieu-keo-hydrogel-chua-90-nuoc","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/sieu-keo-hydrogel-chua-90-nuoc\/","title":{"rendered":"Si\u00eau keo hydrogel ch\u1ee9a 90% n\u01b0\u1edbc"},"content":{"rendered":"

C\u00e1c k\u1ef9 s\u01b0 thu\u1ed9c Vi\u1ec7n c\u00f4ng ngh\u1ec7 Massachusetts (MIT) \u0111\u00e3 \u0111\u01b0a ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t hydrogel d\u00ednh, t\u1ed5ng h\u1ee3p ch\u1ee9a h\u01a1n 90% n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 v\u1eadt li\u1ec7u trong su\u1ed1t gi\u1ed1ng cao su, c\u00f3 th\u1ec3 b\u00e1m ch\u1eafc v\u00e0o c\u00e1c b\u1ec1 m\u1eb7t nh\u01b0 k\u00ednh, silicon, g\u1ed1m, nh\u00f4m v\u00e0 titan s\u00e1nh ngang li\u00ean k\u1ebft gi\u1eefa g\u00e2n v\u00e0 s\u1ee5n trong x\u01b0\u01a1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean T\u1ea1p ch\u00ed Nature Materials.<\/strong><\/p>\n

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Trong c\u00e1c th\u00ed nghi\u1ec7m ch\u1ee9ng minh \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a hydrogel, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 g\u1eafn m\u1ed9t h\u00ecnh vu\u00f4ng hydrogel nh\u1ecf gi\u1eefa 2 t\u1ea5m k\u00ednh v\u00e0 treo m\u1ed9t qu\u1ea3 c\u00e2n kho\u1ea3ng 25 kg v\u00e0o. Ngo\u00e0i ra, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f2n d\u00e1n hydrogel l\u00ean m\u1ed9t t\u1ea5m b\u00e1n d\u1eabn silicon, sau \u0111\u00f3 d\u00f9ng b\u00faa \u0111\u1ec3 \u0111\u1eadp. M\u1eb7c d\u00f9 silicon v\u1ee1, nh\u01b0ng c\u00e1c m\u1ea3nh silicon v\u1eabn \u1edf nguy\u00ean v\u1ecb tr\u00ed.<\/p>\n

\u0110\u1ed9 b\u1ec1n khi\u1ebfn cho hydrogel m\u1edbi tr\u1edf th\u00e0nh \u1ee9ng c\u1eed vi\u00ean l\u00fd t\u01b0\u1edfng cho l\u1edbp s\u01a1n b\u1ea3o v\u1ec7 tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t d\u01b0\u1edbi n\u01b0\u1edbc nh\u01b0 t\u00e0u thuy\u1ec1n v\u00e0 t\u00e0u ng\u1ea7m. V\u00ec hydrogel t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc, n\u00ean c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p cho m\u1ed9t lo\u1ea1t \u1ee9ng d\u1ee5ng y t\u1ebf nh\u01b0 l\u1edbp ph\u1ee7 y sinh cho \u1ed1ng th\u00f4ng ti\u1ec3u v\u00e0 c\u1ea3m bi\u1ebfn c\u1ea5y gh\u00e9p v\u00e0o c\u01a1 th\u1ec3.<\/p>\n

\u201cB\u1ea1n c\u00f3 th\u1ec3 t\u01b0\u1edfng t\u01b0\u1ee3ng ra nh\u1eefng \u1ee9ng d\u1ee5ng m\u1edbi v\u1edbi v\u1eadt li\u1ec7u r\u1ea5t ch\u1eafc, d\u00ednh v\u00e0 m\u1ec1m n\u00e0y\u201d, PGS Xuanhe Zhao – \u0111\u1ed3ng t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u n\u00f3i. Nh\u00f3m nghi\u00ean c\u1ee9u hi\u1ec7n \u0111ang th\u0103m d\u00f2 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng hydrogel cho r\u00f4 b\u1ed1t m\u1ec1m, trong \u0111\u00f3 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m g\u00e2n v\u00e0 c\u01a1 t\u1ed5ng h\u1ee3p ho\u1eb7c trong c\u00e1c kh\u1edbp n\u1ed1i \u0111\u00e0n h\u1ed3i.<\/p>\n

M\u1ed9t hydrogel dai, d\u1ebbo li\u00ean k\u1ebft ch\u1eafc ch\u1eafn, c\u1ea7n c\u00f3 2 \u0111\u1eb7c \u0111i\u1ec3m, \u0111\u00f3 l\u00e0: ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng v\u00e0 bu l\u00f4ng neo h\u00f3a ch\u1ea5t (chemical anchorage). M\u1ed9t hydrogel ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng, v\u1ec1 c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 co gi\u00e3n m\u1ea1nh m\u00e0 kh\u00f4ng gi\u1eef l\u1ea1i to\u00e0n b\u1ed9 n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho thao t\u00e1c n\u00e0y. Hydrogel neo h\u00f3a ch\u1ea5t d\u00ednh ch\u1eb7t v\u00e0o m\u1ed9t b\u1ec1 m\u1eb7t b\u1eb1ng c\u00e1ch li\u00ean k\u1ebft c\u1ed9ng h\u00f3a tr\u1ecb m\u1ea1ng polyme c\u1ee7a n\u00f3 v\u1edbi b\u1ec1 m\u1eb7t \u0111\u00f3.<\/p>\n

Trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n hydrogel m\u1edbi, Yuk \u0111\u00e3 tr\u1ed9n dung d\u1ecbch n\u01b0\u1edbc v\u1edbi m\u1ed9t th\u00e0nh ph\u1ea7n l\u00e0m ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng t\u1ea1o th\u00e0nh v\u1eadt li\u1ec7u cao su, co gi\u00e3n. Sau \u0111\u00f3, \u00f4ng \u0111\u00e3 \u0111\u1eb7t hydrogel l\u00ean c\u00e1c b\u1ec1 m\u1eb7t kh\u00e1c nhau nh\u01b0 nh\u00f4m, s\u1ee9, th\u1ee7y tinh v\u00e0 titan, m\u1ed7i b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i b\u1eb1ng Silane ch\u1ee9c n\u0103ng (SiH4), c\u00e1c ph\u00e2n t\u1eed t\u1ea1o li\u00ean k\u1ebft h\u00f3a h\u1ecdc gi\u1eefa m\u1ed7i b\u1ec1 m\u1eb7t v\u00e0 hydrogel c\u1ee7a n\u00f3.<\/p>\n

Sau \u0111\u00f3, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ki\u1ec3m tra li\u00ean k\u1ebft c\u1ee7a hydrogel b\u1eb1ng th\u1eed nghi\u1ec7m b\u00f3c t\u00e1ch th\u00f4ng th\u01b0\u1eddng, trong \u0111\u00f3 h\u1ecd \u0111\u00e3 \u0111o l\u1ef1c c\u1ea7n \u0111\u1ec3 t\u00e1ch hydrogel kh\u1ecfi b\u1ec1 m\u1eb7t. K\u1ebft qu\u1ea3 cho th\u1ea5y, li\u00ean k\u1ebft c\u1ee7a hydrogel ch\u1eafc c\u1ee1 1.000 J\/m2 b\u1eb1ng g\u00e2n v\u00e0 s\u1ee5n trong x\u01b0\u01a1ng.<\/p>\n

Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 so s\u00e1nh c\u00e1c k\u1ebft qu\u1ea3 n\u00e0y v\u1edbi c\u00e1c hydrogel hi\u1ec7n c\u00f3 c\u0169ng nh\u01b0 v\u1edbi c\u00e1c ch\u1ea5t \u0111\u00e0n h\u1ed3i, b\u0103ng d\u00ednh v\u00e0 gel h\u1ea1t nano v\u00e0 ph\u00e1t hi\u1ec7n th\u1ea5y c\u00e1c ch\u1ea5t k\u1ebft d\u00ednh hydrogel m\u1edbi v\u1eeba c\u00f3 h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc cao h\u01a1n l\u1ea1i v\u1eeba c\u00f3 kh\u1ea3 n\u0103ng li\u00ean k\u1ebft m\u1ea1nh h\u01a1n.<\/p>\n

Ngo\u00e0i ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n c\u1ee7a hydrogel b\u1eb1ng b\u00faa v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 th\u0103m d\u00f2 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng n\u00f3 trong c\u00e1c kh\u1edbp x\u01b0\u01a1ng r\u00f4 b\u1ed1t b\u1eb1ng c\u00e1ch d\u00f9ng c\u00e1c qu\u1ea3 c\u1ea7u nh\u1ecf c\u1ee7a hydrogel \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng ng\u1eafn nh\u1eb1m m\u00f4 ph\u1ecfng ch\u00e2n tay r\u00f4 b\u1ed1t.<\/p>\n

\u201cHydrogel c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng\u201d, PGS. Zhao n\u00f3i. \u201cThay v\u00ec s\u1eed d\u1ee5ng c\u00e1c b\u1ea3n l\u1ec1 th\u00f4ng th\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u m\u1ec1m n\u00e0y v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u1ee9ng ng\u1eafc, t\u1ea1o cho r\u00f4 b\u1ed1t s\u1ef1 tho\u1ea3i m\u00e1i h\u01a1n\u201d.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u0169ng xem x\u00e9t \u1ee9ng d\u1ee5ng c\u1ee7a hydrogel nh\u01b0 v\u1eadt d\u1eabn \u0111i\u1ec7n. Nh\u00f3m \u0111\u00e3 cho mu\u1ed1i v\u00e0o m\u1ed9t m\u1eabu hydrogel v\u00e0 g\u1eafn hydrogel v\u00e0o 2 t\u1ea5m kim lo\u1ea1i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i qua c\u00e1c \u0111i\u1ec7n c\u1ef1c \u0111\u1ebfn m\u1ed9t \u0111\u00e8n LED. K\u1ebft qu\u1ea3 l\u00e0 hydrogel k\u00edch ho\u1ea1t d\u00f2ng ion mu\u1ed1i trong m\u1ea1ch \u0111i\u1ec7n, cu\u1ed1i c\u00f9ng th\u1eafp s\u00e1ng \u0111\u00e8n LED.<\/p>\n

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang quan t\u00e2m \u0111\u1ebfn vi\u1ec7c th\u0103m d\u00f2 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng hydrogel trong r\u00f4 b\u1ed1t, c\u0169ng nh\u01b0 trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed sinh h\u1ecdc.<\/p>\n

Vista<\/em>
\n http:\/\/khoahocvacongnghevietnam.com.vn<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c k\u1ef9 s\u01b0 thu\u1ed9c Vi\u1ec7n c\u00f4ng ngh\u1ec7 Massachusetts (MIT) \u0111\u00e3 \u0111\u01b0a ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t hydrogel d\u00ednh, t\u1ed5ng h\u1ee3p ch\u1ee9a h\u01a1n 90% n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 v\u1eadt li\u1ec7u trong su\u1ed1t gi\u1ed1ng cao su, c\u00f3 th\u1ec3 b\u00e1m ch\u1eafc v\u00e0o c\u00e1c b\u1ec1 m\u1eb7t nh\u01b0 k\u00ednh, silicon, g\u1ed1m, nh\u00f4m v\u00e0 titan s\u00e1nh ngang li\u00ean k\u1ebft gi\u1eefa g\u00e2n […]<\/p>\n","protected":false},"author":17,"featured_media":5031,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4553","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=4553"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4553\/revisions"}],"predecessor-version":[{"id":5032,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4553\/revisions\/5032"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5031"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}